Upgrade flipper gem to support Rails 6

Gemfile

@@ -455,9 +455,9 @@ gem 'google-protobuf', '~> 3.8.0'
 gem 'toml-rb', '~> 1.0.0', require: false
 
 # Feature toggles
-gem 'flipper', '~> 0.13.0'
-gem 'flipper-active_record', '~> 0.13.0'
-gem 'flipper-active_support_cache_store', '~> 0.13.0'
+gem 'flipper', '~> 0.17.1'
+gem 'flipper-active_record', '~> 0.17.1'
+gem 'flipper-active_support_cache_store', '~> 0.17.1'
 gem 'unleash', '~> 0.1.5'
 
 # Structured logging

Gemfile.lock

@@ -285,13 +285,13 @@ GEM
     fast_gettext (1.6.0)
     ffaker (2.10.0)
     ffi (1.11.1)
-    flipper (0.13.0)
-    flipper-active_record (0.13.0)
-      activerecord (>= 3.2, < 6)
-      flipper (~> 0.13.0)
-    flipper-active_support_cache_store (0.13.0)
-      activesupport (>= 3.2, < 6)
-      flipper (~> 0.13.0)
+    flipper (0.17.1)
+    flipper-active_record (0.17.1)
+      activerecord (>= 4.2, < 7)
+      flipper (~> 0.17.1)
+    flipper-active_support_cache_store (0.17.1)
+      activesupport (>= 4.2, < 7)
+      flipper (~> 0.17.1)
     flowdock (0.7.1)
       httparty (~> 0.7)
       multi_json
@@ -1149,9 +1149,9 @@ DEPENDENCIES
   faraday_middleware-aws-signers-v4
   fast_blank
   ffaker (~> 2.10)
-  flipper (~> 0.13.0)
-  flipper-active_record (~> 0.13.0)
-  flipper-active_support_cache_store (~> 0.13.0)
+  flipper (~> 0.17.1)
+  flipper-active_record (~> 0.17.1)
+  flipper-active_support_cache_store (~> 0.17.1)
   flowdock (~> 0.7)
   fog-aliyun (~> 0.3)
   fog-aws (~> 3.5)

spec/requests/api/features_spec.rb

@@ -118,14 +118,13 @@ describe API::Features do
           post api("/features/#{feature_name}", admin), params: { value: 'true', user: user.username, feature_group: 'perf_team' }
 
           expect(response).to have_gitlab_http_status(201)
-          expect(json_response).to eq(
-            'name' => 'my_feature',
-            'state' => 'conditional',
-            'gates' => [
-              { 'key' => 'boolean', 'value' => false },
-              { 'key' => 'groups', 'value' => ['perf_team'] },
-              { 'key' => 'actors', 'value' => ["User:#{user.id}"] }
-            ])
+          expect(json_response['name']).to eq('my_feature')
+          expect(json_response['state']).to eq('conditional')
+          expect(json_response['gates']).to contain_exactly(
+            { 'key' => 'boolean', 'value' => false },
+            { 'key' => 'groups', 'value' => ['perf_team'] },
+            { 'key' => 'actors', 'value' => ["User:#{user.id}"] }
+          )
         end
       end